Die fok making augers



UNTTED sTATEs PATENT oEEicE.

EZRA LHOMMEDIEU, OF CHESTER, CONNECTICUT.

DIE FOR MAKING AUGERS.

Specification of Letters Patent No. 11,613, dated August 29, 1854.

T0 all whom if may concern:

Be it known that I, EZRA LHOMMEDIEU, of Chester, in the county ofMiddlesex and State of Connecticut, have invented a new and usefulImprovement in Dies for Manufacturing Spiral-Twist Angers; and I dohereby declare that the same is fully described and represented in thefollowing specification and the accompanying drawings, let-ters,figures, and references thereof.

In the kind of auger to the manufacturing of which my invention isapplicable is represented in side view in Figure 1. The lower end of thespiral twist, a2, is provided with what is usually termed the head, a;which head may be made either with or without a conical screw nib. Thishead as heretofore made has had its hollow or part, c, partly formed bya male die. Vhen the blank for an auger was first made it was customaryto forge it with the head, a, standing at or about at right angles tothe shank, b, as seen in side view in Fig. 2, and in end view in Fig. 3,of t-he aforementioned drawings. In this form it was laid in a femaledie (shaped as seen in top View in Fig. t, and in longitudianl sectionin Fig. 5,) and by means of a male die (formed as seen in side view inFig. 6, and in bottom view in Fig. 7,) it received the form as shown inside view in Fig. 8, and in end views in Figs. 9, and 10.

The part, c, of Fig. 9, was formed by the part, 1, of Figs. 6, and 7,while the shank, I), entered the recesses, 2, of such figures. This didnot form the whole of the hollow or recess of the auger head as it leftwhat was below the shank or the part, cl, to be subsequently removed bya file or chisel.

The purpose of my present invention is to form the whole of the hollowof the head, viz, not only that by the side of the shank, but under it,at one operation by improved dies, and besides this to form the head onthe shank so that the shank shall stand in the proper relation or angleto the head for direct application to the twisting machine. When thedies hereinbefore described were employed, the head befo-re the shankcould be applied to the twisting mandrel had to be bent down to theproper angle with the shank or so as to stand in relation to it as seenin Figs. 11, 12, and 18, the former of which' is a front view of it,while the other two respectively represent bottom and top views of it.

In Fig. 14, I have exhibited a front elevation of the two improved diesas used by me. Fig. 15, is a top view of the lower or male die, whileFig. 16, is an underside or bottom view of the upper or female die ofthe pair.

The piece of metal to have its head formed by the said dies is forgedout `in the form as represented in Figs. 17, and 18, the former being aside and ldie latter a top view of it. lVhen so formed its head, a, islaid in the sunken recess or chamber, a, of the female die and with itsshank, Z), projecting (as shown by dotted lines in Fig. 15,) through apassage, 7L, leading out of such chamber; the bottom surface of thehead, a, being made to rest on the bottom of the chamber, the sides ofthe chamber completely inclosing the sides of the head. The male die isarranged so that its recess former, f, shall pass down into the chamber,L, and when it is forced down upon the metal blank it forms the whole ofthe hollow or recess of the head at once, there being no necessity ofany partof it being formed by chipping or filing as in the old way, therest of the recess and head being simply subjected to the file for thepurpose of being finished or worked up smooth.

In my improved dies, I have arranged the shank entrance, L, of thematrix or die chamber, a, so that it shall stand with respect to thebot-tom of the mold at the turning angle of inclination to the shank andbottom of the head. The male die is w arranged to work downwardperpendicularly to the bottom surface of the chamber, a', (Fig. 15).This arrangement constitutes my improvement, as it aords me theopportunity of making the auger to much better advantage than by the oldway, and the old construction of dies as above described.

I am aware that the swaging of the lip and head of an auger by dies isnot new. Then employed they have not formed the whole of the hollow orrecess of the auger head, as what was below the shank, or the part d,afterward had to be removed by a tile or chisel.

I therefore do not claim the mere employment of dies in such way toswage out the `lip and head of an auger and a part only dies, but havingits shank at the proper of the recess or cavity of the head but, turningangle with respect to it as de- What I cla-iin as my invention isscribed. vThe above described peculiar arrangement In testimony whereof,I have hereunto set 15 5 of the shank entrance of the matrix, that mysignature this twenty seventh day of face of it against which theholflow surfac May,A. D. 1854. of the auger head rests and is ormed, anthe male die, which forms the hollow or re- EZRA L HOMMEDIEU" cess ofthe head, the same enabling ine to f Witnesses: l0 make an auger headnot only with the l/VALDo P. VINAL,

whole of its recess stamped or formed by JULIAN LHOMMEDIEU.

